Electronic apparatus

Abstract

An electronic apparatus includes an electronic panel foldable together with a window; and a first functional layer and a second functional layer each foldable together with the window and the electronic panel. The second functional layer is disposed farther from the window than the first functional layer, and has a thickness in a range from about micrometers to about 50 micrometers and a modulus in a range from about 3 gigapascals to about 8 gigapascals, and the first functional layer is disposed closer to the window than the second functional layer, and has both a thickness equal to or greater than that of the second functional layer, and a modulus less than that of the second functional layer.

What is claimed is: 
     
       1. An electronic apparatus comprising:
 a display panel which provides an image and is foldable with respect to a folding axis; 
 a first cover layer which is foldable together with the display panel with respect to the folding axis and disposed on the display panel; 
 a second cover layer which is foldable together with the display panel with respect to the folding axis and disposed below the display panel; 
 a plurality of functional layers between the display panel and the first cover layer, the plurality of functional layers foldable together with the each other and with the first cover layer and the display panel; 
 the plurality of functional layers comprising:
 a first functional layer which includes any one of polyurethane, silicone, polyether block amide, and copolyester elastomers, and 
 a second functional layer which is disposed farther from the first cover layer than the first functional layer; and 
 
 adhesive layers which respectively couple the first cover layer to the first functional layer, the second functional layer to the first functional layer, the second functional layer to the display panel and the display panel to the second cover layer, 
 wherein 
 the second functional layer which is disposed farther from the first cover layer than the first functional layer, has a thickness in a range from 30 micrometers to 50 micrometers together with a modulus in a range from 3 gigapascals 8 gigapascals, and 
 the first functional layer has a thickness equal to or greater than the thickness of the second functional layer together with having a modulus less than that of the se and functional layer. 
 
     
     
       2. The electronic apparatus of  claim 1 , wherein
 the thickness of the first functional layer is in a range from 50 micrometers to 100 micrometers, and 
 a modulus of the first functional layer is variable according to temperature. 
 
     
     
       3. The electronic apparatus of  claim 2 , wherein the modulus of the first functional layer is about 200 megapascals to 1500 megapascale at room temperature. 
     
     
       4. The electronic apparatus of  claim 1 , wherein
 the thickness of the first functional layer is in a range from 50 micrometers to 75 micrometers, 
 a modulus of the first functional layer is 1000 megapascals to 1800 at a temperature of about −20° C. 
 
     
     
       5. The electronic apparatus of  claim 2 , wherein
 the thickness of the first functional layer is in a range from 75 micrometers to 100 micrometers, and 
 the modulus of the first functional layer is in a range from 1000 megapascals to 1800 megapascals at a temperature of about −20° C. 
 
     
     
       6. The electronic apparatus of  claim 2 , wherein
 the thickness of the first functional layer is in a range from 50 micrometers to 75 micrometers, and 
 the modulus of the first functional layer is 100 megapascals to 800 megapascals at a temperature of about 80° C. 
 
     
     
       7. The electronic apparatus of  claim 2 , wherein
 the thickness of the first functional layer is in a range from 75 micrometers to 100 micrometers, and 
 the modulus of the first functional layer is 150 megapascals to 800 megapascals at a temperature of about 80° C. 
 
     
     
       8. The electronic apparatus of  claim 1 , wherein each of the first functional layer and the second functional layer is optically clear. 
     
     
       9. The electronic apparatus of  claim 1 , wherein the first cover layer comprises glass. 
     
     
       10. The electronic apparatus of  claim 9 , wherein the first cover layer further comprises a coating layer on a top surface of the first cover layer. 
     
     
       11. An electronic apparatus comprising:
 an electronic panel which provides an image and is bendable with respect to an axis extending in one direction; 
 a window which is bendable together with the electronic panel; 
 a plurality of functional layers between the electronic panel and the window, the plurality of functional layers foldable together with the each other and with the window and the electronic panel; and 
 the plurality of functional layers comprising:
 a first functional layer which includes any one of poly ethane, silicone, polyether block amide, and copolyester elastomers, and 
 a second functional layer which is disposed farther from the window than the first functional layer; 
 
 wherein 
 the first functional layer has a thickness equal to or greater than a thickness of the second functional layer together with a modulus less than a modulus of the second functional layer. 
 
     
     
       12. The electronic apparatus of  claim 11 , wherein
 the thickness of the second functional layer is in a range from 30 micrometers to 50 micrometers, and 
 the modulus of the second functional layer is in a range from 3 gigapascals to 8 gigapascals. 
 
     
     
       13. The electronic apparatus of  claim 12 , wherein the thickness of the first functional layer is in a range from 50 micrometers to 100 micrometers. 
     
     
       14. The electronic apparatus of  claim 11 , wherein the thickness of the first functional layer is in a range from 50 micrometers to 75 micrometers. 
     
     
       15. The electronic apparatus of  claim 14 , wherein the modulus of the first functional layer is 100 megapascals to 800 megapascals at the temperature of about 80° C. 
     
     
       16. The electronic apparatus of  claim 13 , wherein the thickness of the first functional layer is in a range from 75 micrometers to 100 micrometers. 
     
     
       17. The electronic apparatus of  claim 16 , wherein the modulus of the first functional layer is 150 megapascals to 800 megapascals at the temperature of about 80° C. 
     
     
       18. The electronic apparatus of  claim 11 , further comprising adhesive layers which respectively couple the window to the first functional layer, and the second functional layer to the first functional layer. 
     
     
       19. The electronic apparatus of  claim 11 , wherein the window comprises glass. 
     
     
       20. The electronic apparatus of  claim 11 , wherein
 the first functional layer has a modulus in a range of 1000 megapascals to 1800 megapascals at a temperature of about −20° C., and 
 the first functional layer has a modulus in a range of 200 megapascals to 1000 megapascals at room temperature.